<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>01_CSS显示模式</title>
    <style>
        div{
            width: 100px;
            height: 100px;
            border: 5px solid #f00;
        }
        span{
            background-color: #ff0;
            width: 200px;
            height: 200px;
            display: inline;
        }
    </style>
</head>
<body>

</body>
</html>